Internal combustion engine



May 1 1931- A. SWINGLE 1,804,521

I INTERNAL COMBUSTION ENGINE Filed Feb; 23, 1928 ll/ls Patented May 12, 1931 ARCHIIBALD SVYINGLE, OF ROUNDUP, MONTANA INTERNAL COMBUSTION ENGINE Application filed February 23, 1928. Serial No. 256,426.

This invention relates to means for controlling the passage of fuel to an internal combustion engine and has for its object the provision of a very simple device whereby the admission of the combustible mixture may be cut oil? and outside air simultaneously admitted to the engine to cool the engine and permit its use as a brake when descending steep grades. The invention is illustrated in the accompanying drawings and will be hereinafter set forth.

In the drawings: Figure 1 is an elevation of my device showing the position of the same relative to the intake manifold and the carburetor of the engine;

Fig. 2 is a similar view showing the opposite side of the device;

Fig. 3 is an elevation of the device taken at a right angle to Figs. 1 and 2, and Fig. 4 is a longitudinal section on the line 44 of Fig. 3.

Referring particularly to the drawing, the reference numeral 1 indicates a portion of the intake manifold of "an internal combustion engine, and 2 indicates a carbureter' which may be of any preferred or approved form and supplies a combustible mixture to the manifold. In carrying out the present invention, there is interposed between the flange f the manifold and the flange 4 of the carbureter a sleeve or tubular body 5 provided with flanges 6 at its ends wherebyitmay be securely bolted to and between the flanges 3 and {1, as clearly shown in Figs. 1 and 2. Between its ends, the sleeve 5 is constructed .with a lateral nipple or nozzle 7 which is open to the atmosphere and with in this nozzle is mounted a butterfly valve 8 which normally extends diametrically across the nozzle,.as shown in full lines in Fig. 4, so as to cut off the entrance of outside air. A similar butterfly valve 9. is mounted within the sleeve5 below the nozzle or nipple 7, and this valve is normally in tive valves extend through and 1 and 3.

'reference'to Figs. 2 and 3.

open position, also as shown in full lines in Fig.4. The stems 10 and 11 of the respecare rotatably mounted in the walls of the tube and nipple and, at one side of the tube, crank arms 12 5 and 13 are secured firmly to the respective stems so that upon actuation of the crank arms the valves will be rocked, as will be understeod. A link 14 is pivotally attached to.the outer ends of the cranks 12 and v13, as shown in Fig 1, so that the valves will be. actuated simultaneously. The crank arm 13 on the stem 11 of the valve 9 is provided' with an ofl'set lug 15 adapted to impinge against one stoplug 16 formed upon the 0 side of the tubular body or sleeve, the crank arm beingdisposed to impinge against an other similar lug, as shown in Fig. 1, so that the movement of-the valve 9 will be limited and the valve cannot be rocked to such an extent that it will return to the open position and then move beyond the same so as to cut oil the flow when flow is desired. To I compensate for wear or irregularities in manufacture,- a set screw 17 is mounted in the lug l5 and adapted to engage the coopcrating stop lug 16, asclearly shown in Figs.

tthe opposite side of the sleeve or tubular body 5, a retractile spring 18 is secured to the end of the valve stem 10in such manner that it tends to hold the valve always in the closed position, the spring-be-, ing mounted at .some fixed point upon the sleeve which point may conveniently. be the understood upon Attached tothe end of the valve stem 11 at the side remote from the crank arm 13 is an operating crank arm or lever 19 to the upper .free end, of

valve stem 11*, as will be which is attached a connecting rod 20 which extends to the floor ,of the vehicle and is there attached to afoot pedal of any approved form located adjacent and at the left side 'of the clutch pedal.

It will now be seen that the spring 18 holds the parts normally in the positions shown in Figs. 1 and 2 and in full lines in Fig. 4, and ordinarilythere will be no reason for shifting the parts from these positions. Should the engine race or the vehicle assume a dangerous speed, the undesirable conditions may be checked by pressing'upon the pedal connected with the rod 20 so that the valve 9 will be rocked to the position shown by dotted lines in Fig. 4, thereby throttling the flow of fuel to the engine without making it necessary to disturb the adjustment of the carbureter or of an of the arts cooperating therewith and wit iout cutting off the ignition. When the valve stem 11 is rocked to throw the valve 9 into throttling position, the movement of the same is transmitted through the crank arm 13 to the link 14 and thence to the crank arm 12 so that the valve 8 is simultaneously rocked to the position shown in dotted lines in Fig. 4 vand fresh air at once admitted to the manifold and thence to the several cylinders of the engine. The cylinders will, consequently, be, cooled and the air admitted thereto will tend to check the movement of the pistons so that the engines will operate as brakes to retard the vehicle. When the chauffeur actuates the valve, he employs his left foot and necessarily removes it from the clutch pedal. Should he then desire to open the clutch in order to shift gears, he will have tomemove his foot from the pedal controlling the valves 8 and 9 and the spring 18 will then at once return the valves to the normal position so that the gears cannot be shifted when the engine is dead.

My device is exceedingly simple in the construction and arrangement of-its parts and may be produced and installed at a low cost and may be easily operated and is highly eflicient when operated.

Having thus described the invention, I claim:

A device of the character described comprising a tubular body adapted to be secured in the path between the carbureter and intake manifold of an internal combustion engine and having attaching means at its ends, a tubular side arm leading from said body intermediate its ends and open to atmosphere, upper and lower butterfly valves located respectively in said arm and in the body below the arm pivot rods for said valves journaled in alls of the arm and body with their ends projecting outwardly therefrom, a lever fixed upon one end of the rod for the upper valve, a lever clamped about the corresponding end of the rod for j the lower valve and adjustable circumferentially thereof, means to limit swinging movements of the last-mentioned lever when secured in a set position upon its rod, a pitman link having its ends pivotally engaged with free ends of said levers and causmg ARCHIBALD SWI GLE. 

